Andy Smith, a former Blackwater employee now with the State Department, pointed out an interesting little detail that was picked up in the Star-Gazette. One picture of the aftermath of the 16 September shooting in Nisoor Square in Iraq, showed piles of shell casings being swept up. Just further proof that Blackwater guards are trigger happy, right? Actually, no. As Smith explains, those were AK-47 rounds. Blackwater doesn't use AKs.
So what does this picture really tell us? First, the Blackwater convoy came under very heavy fire. Second, someone felt the need to sweep up the evidence. Before the Iraqi government conducted its investigation? Wouldn't surprise me. Explains why several reports found only American ammunition was found laying around the scene when the investigators showed up.